Logitech Keys to Go Bluetooth Keyboard
The Logitech Keys to Go Portable is a mechanical keyboard for Apple devices, which makes it a nice companion to the iPhone 6 Plus. This slim keyboard delivers a 3 month battery and iOS keyboard shortcuts. There is a number row and a shortcut row. This does not include a stand for the iPhone 6 Plus, so you'll need a separate one.
The cover of this iPhone 6 Plus Bluetooth keyboard is resiliant, so you can wipe away spills or dirt and keep working. This is available in black, teal and red color options.
$69.99 at Logitech